Mark 5:37
And he suffered no man to follow with him, save Peter, and James, and John the brother of James.
Mark 9:2
And after six days Jesus taketh with him Peter, and James, and John, and bringeth them up into a high mountain apart by themselves: and he was transfigured before them;
Mark 14:33
And he taketh with him Peter and James and John, and began to be greatly amazed, and sore troubled.
Luke 8:51
And when he came to the house, he suffered not any man to enter in with him, save Peter, and John, and James, and the father of the maiden and her mother.
Acts 9:40
But Peter put them all forth, and kneeled down and prayed; and turning to the body, he said, Tabitha, arise. And she opened her eyes; and when she saw Peter, she sat up.
2 Corinthians 13:1
This is the third time I am coming to you. At the mouth of two witnesses or three shall every word established.